I've been looking for a loose complete Rebel Transport for quite awhile and can never find one on ebay. There's always something missing from it, or it's so horribly yellow I wouldn't want to touch it with a 10 foot pole. If you have the money for it, I'd suggest looking for a MIB Transport. That way you should be assured you're getting a complete piece. Plus you'll have a kickass vintage box

Unfortunalty the plastic does turn yellow and finding one complete is real tuff unless you want to spent some good coin. If your lucky and spot one, you can grab it for a cheap bin but you have to be on the ball. Loose can fetch up to $50.00 and with the box can go higher.

You mentioned that you may repaint it so yellowing is not a factor, having all the parts is.

I bought one on ebay with the same idea in mind. The person scammed me though and showed me a picture that was different from the actual item. It was clean in the pic but it was actually yellow and very, very dirty. Needless to say I had to clean it. It still did not come off so I have to repaint the entire thing. Long story short, if you go ebay, make sure you get what you pay for.